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<h1 class="topictitle1">Restoration Failed Because the Replica Consistency Protocol of the Database Instance Is Inconsistent with That of the Restoration Target Instance</h1>
<div><div class="section"><h4 class="sectiontitle">Symptom</h4><p>When a database restoration job is being executed, an error is reported indicating that the replica consistency protocol of the instance is inconsistent with that of the restoration target instance.</p>
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<div class="section"><h4 class="sectiontitle">Possible Causes</h4><p>When a GaussDB restoration job is being executed, the replica consistency protocol of the instance must be consistent with that of the restoration target instance.</p>
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<div class="section"><h4 class="sectiontitle">Troubleshooting</h4><ol><li id="EN-US_TOPIC_0000002200058553__li670013520345"><span>Run the following command in the database of the instance to check the consistency protocol:</span><p><pre class="screen" id="EN-US_TOPIC_0000002200058553__screen8129154810319">show enable_dcf;</pre>
<ul id="EN-US_TOPIC_0000002200058553__ul1067119543325"><li id="EN-US_TOPIC_0000002200058553__li367155483213">If <strong id="EN-US_TOPIC_0000002200058553__b12629511111915">off</strong> is displayed in the command output, the replica consistency protocol of the backup copy is <strong id="EN-US_TOPIC_0000002200058553__b15561420201920">Quorum</strong>.</li><li id="EN-US_TOPIC_0000002200058553__li203721361338">If <strong id="EN-US_TOPIC_0000002200058553__b1248142114199">on</strong> is displayed in the command output, the replica consistency protocol of the backup copy is <strong id="EN-US_TOPIC_0000002200058553__b72482021181917">Paxos</strong>.</li></ul>
</p></li><li><span>Select an instance whose replica consistency protocol is the same as that of the backup copy for a <a href="en-us_topic_0000002200144085.html">restoration job</a>.</span></li></ol>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="en-us_topic_0000002164657742.html">FAQs</a></div>
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